specification-pattern

What problem does it solve?

The Specification pattern encapsulates query logic into reusable, composable, and testable building blocks for EF Core, centralizing criteria, includes, ordering, and paging.

Core Features & Use Cases

• Reusable criteria: define and reuse filters across repositories.
• Includes and paging: specify eager loading and page-sized results consistently.
• Order by support: apply deterministic sorting for stable results.
• Use Case: fetch a paged list of active entities for a given organization with optional includes.

Quick Start

Create a concrete specification by extending BaseSpecification<T>, add criteria via AddCriteria, attach includes with AddInclude, and apply paging with ApplyPaging. Then pass the specification to a repository that uses SpecificationEvaluator to execute the query.